
- BGG rank
- BGG #2,948
- BGG rating
- 6.9
Conquest of Planet Earth: The Space Alien Game
- 1–4 players
- 30–90 min
- Complexity 2.2/5
- 2010

Rules assistance for Aetherium: Rhommox Core Book
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

What would you like to know?
Answers come from the official rulebook, with the page to check.
Aetherium: Rhommox Core Book is an expansion for Aetherium released in 2018 for 2 players, 60 minutes per game, and ages 12 and up. It was designed by Brian Niro and Christopher Tavonatti and its main mechanics are Area Movement, Dice Rolling, and Area Majority / Influence.
The arrival of the Rhommox into civilized Aetherial space shocked the system to its very core. These horrifying monsters were unlike anything that had ever been encountered, save perhaps the strange creatures that accompanied the RezX Aetherships. Unlike RezX’s new companions though, the Rhommox did not show affinity towards the human consciousness. Instead, they were always immediately hostile towards anything or anyone unknown and they showed no desire or ability to communicate with humankind. 48-page full color rulebook includes the haunted origins of the Rhommox faction, 3 new Operations, description and rules for all 13 programs in the faction, as well as all faction specific rules.
Aetherium: Rhommox Core Book supports 2 players according to the catalogue. This is the publisher’s listed player count, so the game is designed for exactly that number of participants. Variants for other group sizes, if any, are described in the rulebook of your edition, so check it before setting up a different configuration.
The listed playing time for Aetherium: Rhommox Core Book is 60 minutes. This is the publisher’s estimate for a full game. The actual duration depends on the group, the player count and familiarity with the rules: first sessions usually run longer, while experienced groups often finish faster. Setup and teaching time are not included in this estimate.
The catalogue lists Aetherium: Rhommox Core Book for ages 12 and up. This is the publisher’s recommendation and reflects reading demands, rule complexity and small components rather than theme alone. Younger players can often join with help from an adult, so check the age guidance on your edition and consider your group’s experience with board games.
Aetherium: Rhommox Core Book belongs to these categories: Miniatures, Science Fiction, and Collectible Components. Its main mechanics are Area Movement, Dice Rolling, and Area Majority / Influence. Categories describe the theme and setting of a game, while mechanics describe what players actually do on their turns. Each mechanic links to a catalogue hub with similar games, which helps when you want something comparable.
The credited designers of Aetherium: Rhommox Core Book are: Brian Niro and Christopher Tavonatti. These credits come from the published game data and name the people responsible for the game’s design, not its illustrators or publishers. Designer pages on MeepleRules collect other titles by the same designers, which helps when you enjoy a game and want to find similar ones.
The catalogue lists Aetherium: Rhommox Core Book as an expansion for Aetherium. Expansions add new content, rules or scenarios to the base game and usually cannot be played on their own, so you need Aetherium to use it. Check that your edition of Aetherium is compatible, as some expansions were revised between editions.